Re: Centralised architecture detection

On Wed, Jul 1, 2026, at 9:20 AM, Tom Lane wrote:
> "Greg Burd" <greg(at)burd(dot)me> writes:
>> On Tue, Jun 30, 2026, at 9:11 PM, Tom Lane wrote:
>>> Based on that thread, I'm thinking
>>> #if SIZEOF_VOID_P == 8
>
>> I don't see SIZEOF_VOID_P but I do find:
>> #define __SIZEOF_POINTER__ 8
>
> SIZEOF_VOID_P is set up by autoconf/meson via pg_config.h.

facepalm, of course! :)

> So it will be available here. I'd rather use our own
> symbol because, if other arches emerge with similar issues,
> we can be sure of having a common pattern to follow.
>
> I do see __SIZEOF_POINTER__ getting predefined locally
> (in recent gcc and clang on x86_64), but it's far from clear
> to me how standard, or well-documented, that macro is.
>
> regards, tom lane

Was there anything else you needed from me on this one?

best.

-greg